diff --git a/SCinter.c b/SCinter.c
index dcabc06e..185f074e 100644
--- a/SCinter.c
+++ b/SCinter.c
@@ -74,7 +74,6 @@
 #include "lld_str.h"
 static void printList(SConnection *pCon, int listID);
 static void freeList(int listID);
-int compareStringNode(void *pStr1, void **ppStr2);
 
 #define MAXLEN 256
 #define MAXPAR 100
@@ -535,6 +534,12 @@ static void printAll(SicsInterp *pSics, SConnection *pCon)
         SCWrite(pCon,pBueffel,eStatus);                  
     }
 }
+/*------------------------------------------------------------------------*/
+/* compareStringNode wraps strcmp for use in findNode(LLD module) calls   */
+int compareStringNode(const void *pStr1, const void *ppStr2)
+{
+    return strcmp((char *)pStr1,*(char **)ppStr2);
+}
 /*------------------------------------------------------------------------
   printAllTypes prints the list of types of objects instantiated on the
   CommandList. 
@@ -1001,13 +1006,6 @@ static void freeList(int listID)
     } while(0!=LLDnodePtr2First(listID));
     LLDdelete(listID);
 }
-
-/*------------------------------------------------------------------------*/
-/* compareStringNode wraps strcmp for use in findNode(LLD module) calls   */
-int compareStringNode(void *pStr1, void **ppStr2)
-{
-    return strcmp((char *)pStr1,(char *)(*ppStr2));
-}
 /*------------------------------------------------------------------------*/
  void RemoveStartupCommands(void)
  {
diff --git a/linux_def b/linux_def
index 95fe3c04..ea98bcdb 100644
--- a/linux_def
+++ b/linux_def
@@ -9,4 +9,4 @@
 
 MFLAGS=-f makefile_linux$(DUMMY)
 
-HDFROOT=/afs/psi.ch/project/sinq/sl-linux
\ No newline at end of file
+HDFROOT=/afs/psi.ch/project/sinq/sl-linux
diff --git a/makefile_slinux b/makefile_slinux
index 493ec238..d1347acc 100644
--- a/makefile_slinux
+++ b/makefile_slinux
@@ -17,7 +17,7 @@ CC       = gcc
 CFLAGS = -I$(HDFROOT)/include -DHDF4 -DHDF5 -DNXXML $(NI) \
        -Ipsi/hardsup -I. \
        -fwritable-strings -DCYGNUS -DNONINTF -g $(DFORTIFY) \
-       -Wall -Wno-unused -Wno-comment -Wno-switch 
+       -Wall -Wno-unused -Wno-comment -Wno-switch -Werror
 
 BINTARGET = bin
 EXTRA=nintf.o
diff --git a/napi4.c b/napi4.c
index 76b800ea..46ff5da8 100644
--- a/napi4.c
+++ b/napi4.c
@@ -21,7 +21,7 @@
              
   For further information, see <http://www.neutron.anl.gov/NeXus/>
   
-  $Id: napi4.c,v 1.6 2006/03/03 15:30:55 koennecke Exp $
+  $Id: napi4.c,v 1.7 2006/03/23 12:39:11 zolliker Exp $
 
 ----------------------------------------------------------------------------*/
 #include <stdlib.h>
@@ -1236,7 +1236,7 @@ extern	void *NXpData;
   {
     pNexusFile pFile;
     pFile = NXIassert (fid);
-     printf("HDF4 link: iTag = %d, iRef = %d, target=\"%s\"\n", sLink->iTag, sLink->iRef, sLink->targetPath);
+     printf("HDF4 link: iTag = %ld, iRef = %ld, target=\"%s\"\n", sLink->iTag, sLink->iRef, sLink->targetPath);
     return NX_OK;
   }
   
diff --git a/nxxml.c b/nxxml.c
index 73fa4713..bec44eef 100644
--- a/nxxml.c
+++ b/nxxml.c
@@ -866,7 +866,7 @@ static char *formatAttributeData(void *data, int datalen, int iType){
     break;
   }
   if(intData){
-    snprintf(number,79,"%s%d",type,iValue);
+    snprintf(number,79,"%s%ld",type,iValue);
   } else {
     snprintf(number,79,"%s%f",type,dValue);
   }
diff --git a/sics.h b/sics.h
index ebc9c1ce..b7044e5b 100644
--- a/sics.h
+++ b/sics.h
@@ -15,6 +15,10 @@
                 ePreset
                 }CounterMode;
 
+/* the following line suppresses const declarations in tcl.h.
+   -> makes the compiler happy M.Z. */
+#define NO_CONST
+
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>